Diagnostic codes
6-14
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
7065
POST
ALARM light failure
1. Replace UI display PCB.
2. Replace controller PCB.
7066
POST
CAUTION light failure
1. Replace UI display PCB.
2. Replace controller PCB.
7067
POST
Main fan failure
1. Make sure main fan is operating.
2. Make sure room temperature is not too
low. Make sure that ventilator has
warmed up and attained a steady-state
temperature.
3. Make sure ventilator lid is closed.
4. Make sure vents in unit are not
blocked.
5. Clean or replace fan filter, as necessary.
6. Check that main fan/ventilator head
harness connection is secure.
7. Replace main fan.
8. Replace air flow thermistor assembly.
7068
POST
Not Ventilating signal used in
UI/BD communications is not in
expected state.
1. Power off ventilator. Wait 15 seconds.
Power on ventilator.
2. See Section 6.2.
3. Replace controller PCB.
7069
POST
ALARM light failure
1. Replace UI display PCB.
2. Replace controller PCB.
7070
POST
Main alarm speaker failure
1. Check wiring to speaker.
2. Replace speaker.
3. Replace pressure solenoid PCB.
7071
POST
An option panel erroneously
appears to be installed.
1. Make sure option connector is
disconnected.
2. Replace controller PCB.
7072
POST
An option PCB erroneously
appears to be installed.
1. Make sure option connector is
disconnected.
2. Replace controller PCB.
7074
POST
BBU PCB/controller PCB or UI
display PCB/LCD panel
connection error
1. Check that BBU PCB/controller PCB
cable connections are secure.
2. Check that UI display PCB/LCD panel
connections are secure.
3. Replace controller PCB.
4. Replace BBU PCB.
5. Replace UI display PCB.
7075
POST
Ventilator head connection
error
1. Check that ventilator head harness/
controller PCB connection is secure.
2. Replace controller PCB.
7076
POST
Rotary encoder failure or other
hardware failure
1. Replace rotary encoder.
2. Replace UI display PCB.
3. Replace controller PCB.
7077
POST
Hardware failure
Replace controller PCB.
7078
POST
Hardware failure
Replace controller PCB.
Table 6-1: Diagnostic codes (continued)
Code
Software
Possible cause
Corrective action
Содержание Puritan Bennett 700 Series
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